Deleting row from Sqlite in Python does not work

I've got this function however deleting from db does not work for some reason. Anyone any guesses please? Thanks a lot in advance.

self.connect = sqlite3.connect("data.sqlite") self.cur = self.connect.cursor() self.cur.execute("CREATE TABLE IF NOT EXISTS data(products TEXT, suppliers TEXT)") self.connect.commit() list = self.cur.execute("SELECT * FROM data")

...

def delete(self): productx = str(self.listbox.get(ACTIVE))[3:-3] self.cur.execute("DELETE FROM data WHERE Products=?",(productx,)) self.connect.commit()